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Electronic States and Light Absorption in a Cylindrical Quantum Dot Having Thin Falciform Cross Section

Dvoyan, Karen G. and Hayrapetyan, David B. and Kazaryan, Eduard M. and Tshantshapanyan, Ani A. (2009) Electronic States and Light Absorption in a Cylindrical Quantum Dot Having Thin Falciform Cross Section. Nanoscale Research Letters, 4 (2). pp. 130-137.

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Official URL: http://www.springerlink.com/content/1j46uv4r855554...

Abstract

Energy level structure and direct light absorption in a cylindrical quantum dot (CQD), having thin falciform cross section, are studied within the framework of the adiabatic approximation. An analytical expression for the energy spectrum of the particle is obtained. For the one-dimensional “fast” subsystem, an oscillatory dependence of the wave function amplitude on the cross section parameters is revealed. For treatment of the “slow” subsystem, parabolic and modified Pöschl-Teller effective potentials are used. It is shown that the low-energy levels of the spectrum are equidistant. In the strong quantization regime, the absorption coefficient and edge frequencies are calculated. Selection rules for the corresponding quantum transitions are obtained.

Item Type:Article
Uncontrolled Keywords:Modified Pöschl-Teller potential - Cylindrical quantum dot - Falciform cross section - Light absorption - Selection rules
Subjects:Physical Science > Quantum phenomena
ID Code:3407
Deposited By:Lesley Tobin
Deposited On:15 Jan 2009 14:12
Last Modified:15 Jan 2009 14:12

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